# Gemini 2.0 Flash (Feb 2025) vs GPT-5.1

> GPT-5.1 is the stronger model overall, scoring 48.8 to 34.8 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gemini-2-0-flash-vs-gpt-5-1
- Last updated: 2026-10-10
- Shared benchmarks: 41

## Summary

- They share 41 benchmarks with published results for both. Gemini 2.0 Flash (Feb 2025) scores higher in 0 categories and GPT-5.1 in 10 categories; 10 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where GPT-5.1 leads 39.9 to 15.2.
- The biggest single-benchmark swing is SWE-bench Verified (bash only): 13.5% for Gemini 2.0 Flash (Feb 2025) and 66% for GPT-5.1.

## Snapshot

| | Gemini 2.0 Flash (Feb 2025) | GPT-5.1 |
|---|---|---|
| Provider | Google | OpenAI |
| Noometry Index | 34.8 | 48.8 |
| Rank | 223 | 47 |
| Context | — | 400K |
| Input $/M | — | $1.25 |
| Output $/M | — | $10 |
| Weights | Proprietary | Proprietary |

## Coding

- Gemini 2.0 Flash (Feb 2025): 28.2 (#308)
- GPT-5.1: 46.9 (#59)

| Benchmark | Gemini 2.0 Flash (Feb 2025) | GPT-5.1 |
|---|---|---|
| SWE-bench Verified (bash only) | 13.5% | 66% |
| WeirdML | 25.8% | 60.8% |
| LiveBench Coding | 63.4% | 72.5% |
| LMArena Coding | 1351 | 1454 |
| SWE-bench Verified | — | 68% |
| Aider Polyglot | 38.2% | — |
| LMArena WebDev | — | 1395 |
| SciCode | — | 43.3% |
| GSO | — | 13.7% |
| BigCodeBench Instruct | 45.9% | — |
| BigCodeBench Complete | 59.9% | — |
| CadEval | 30% | — |
| ALE-Bench | — | 1,192 |

## Agentic & Tool Use

- Gemini 2.0 Flash (Feb 2025): 28.0 (#85)
- GPT-5.1: 32.5 (#55)

| Benchmark | Gemini 2.0 Flash (Feb 2025) | GPT-5.1 |
|---|---|---|
| Terminal-Bench | — | 47.6% |
| TheAgentCompany | 11.4% | — |
| DeepResearch Bench | — | 42.8% |
| LMArena Search | — | 1199 |
| Vending-Bench 2 | — | 1,473 |

## Reasoning

- Gemini 2.0 Flash (Feb 2025): 15.2 (#308)
- GPT-5.1: 39.9 (#50)

| Benchmark | Gemini 2.0 Flash (Feb 2025) | GPT-5.1 |
|---|---|---|
| ARC-AGI-2 | 1.3% | 17.6% |
| SimpleBench | 31.1% | 53.2% |
| EnigmaEval | 1.1% | 11.2% |
| LiveBench Reasoning | 78.2% | 95.8% |
| LMArena Hard Prompts | 1346 | 1457 |
| DTBench | 63.2% | 90.1% |
| LiveBench Data Analysis | 69.4% | 72.1% |
| Epoch Capabilities Index | 135.36 | 149.66 |
| LiveBench | 66.9% | 78.8% |
| Kagi LLM Benchmark | 37.8% | — |
| ARC-AGI-1 | — | 72.8% |
| CritPt | — | 4.9% |
| Chess Puzzles | — | 32% |
| Mystery Game Puzzles | — | 19% |
| LMCA | — | 43.9% |
| ForecastBench | — | 58.1 |

## Math

- Gemini 2.0 Flash (Feb 2025): 36.1 (#127)
- GPT-5.1: 50.3 (#45)

| Benchmark | Gemini 2.0 Flash (Feb 2025) | GPT-5.1 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 57.8% | 88.6% |
| Omni-MATH | 45.9% | 46.4% |
| LiveBench Math | 75.8% | 94.5% |
| LMArena Math | 1351 | 1446 |
| FrontierMath (Feb 2025 set) | 1.7% | 31% |
| MATH Level 5 | 82.2% | — |
| FrontierMath Tier 4 (v1) | — | 12.5% |

## Knowledge

- Gemini 2.0 Flash (Feb 2025): 32.0 (#207)
- GPT-5.1: 50.5 (#65)

| Benchmark | Gemini 2.0 Flash (Feb 2025) | GPT-5.1 |
|---|---|---|
| GPQA Diamond | 64.1% | 87.6% |
| Humanity's Last Exam | 6.6% | 23.7% |
| MMLU-Pro | 73.7% | 57.9% |
| GPQA (HELM) | 55.6% | 44.2% |
| LMArena Expert | 1340 | 1470 |
| SimpleQA Verified | — | 48% |
| Confabulations | 12.4% | — |
| Vectara Hallucination Rate | — | 10.9% |
| MMLU | 79.7% | — |

## Multimodal

- Gemini 2.0 Flash (Feb 2025): 35.9 (#74)
- GPT-5.1: 44.0 (#17)

| Benchmark | Gemini 2.0 Flash (Feb 2025) | GPT-5.1 |
|---|---|---|
| LMArena Vision | 1158 | 1250 |
| GeoBench | 77% | — |
| VPCT | — | 58.7% |
| LMArena Document | — | 1403 |

## Multilingual

- Gemini 2.0 Flash (Feb 2025): 47.6 (#144)
- GPT-5.1: 54.0 (#51)

| Benchmark | Gemini 2.0 Flash (Feb 2025) | GPT-5.1 |
|---|---|---|
| LMArena Non-English | 1342 | 1431 |
| LMArena Chinese | 1373 | 1495 |
| LMArena French | 1390 | 1451 |
| LMArena German | 1354 | 1439 |
| LMArena Japanese | 1293 | 1453 |
| LMArena Korean | 1314 | 1401 |
| LMArena Russian | 1351 | 1435 |
| LMArena Spanish | 1363 | 1430 |

## Instruction Following

- Gemini 2.0 Flash (Feb 2025): 74.6 (#91)
- GPT-5.1: 84.0 (#1)

| Benchmark | Gemini 2.0 Flash (Feb 2025) | GPT-5.1 |
|---|---|---|
| LiveBench Instruction Following | 85.8% | 93.3% |
| IFEval | 84.1% | 93.5% |
| LMArena Instruction Following | 1336 | 1442 |

## Long Context

- Gemini 2.0 Flash (Feb 2025): 38.1 (#198)
- GPT-5.1: 47.6 (#14)

| Benchmark | Gemini 2.0 Flash (Feb 2025) | GPT-5.1 |
|---|---|---|
| LMArena Longer Query | 1345 | 1448 |
| Fiction.LiveBench | 61.1% | — |
| CL-bench | — | 23.7% |
| CL-bench Life | — | 17.3% |

## Writing & Preference

- Gemini 2.0 Flash (Feb 2025): 49.8 (#184)
- GPT-5.1: 64.7 (#53)

| Benchmark | Gemini 2.0 Flash (Feb 2025) | GPT-5.1 |
|---|---|---|
| LMArena Text | 1354 | 1443 |
| LMArena Creative Writing | 1340 | 1427 |
| WildBench | 80% | 86.3% |
| LMArena Multi-Turn | 1350 | 1449 |
| LiveBench Language | 51.3% | 80.2% |
| Short-Story Creative Writing | 73.8% | — |
| EQ-Bench Creative Writing | 1128 | — |

## FAQ

### Is Gemini 2.0 Flash (Feb 2025) better than GPT-5.1?

GPT-5.1 is the stronger model overall, scoring 48.8 to 34.8 on the Noometry Index.

### Is Gemini 2.0 Flash (Feb 2025) or GPT-5.1 better for coding?

GPT-5.1 scores higher on coding benchmarks: 46.9 versus 28.2 in the Noometry coding category.

### How many benchmarks do Gemini 2.0 Flash (Feb 2025) and GPT-5.1 share?

41 benchmarks have published results for both models. Gemini 2.0 Flash (Feb 2025) has 54 scored results on Noometry and GPT-5.1 has 63.